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 * Licensed to the Apache Software Foundation (ASF) under one   *
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 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
 * "License"); you may not use this file except in compliance   *
 * with the License.  You may obtain a copy of the License at   *
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 *   http://www.apache.org/licenses/LICENSE-2.0                 *
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 * Unless required by applicable law or agreed to in writing,   *
 * software distributed under the License is distributed on an  *
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
 * KIND, either express or implied.  See the License for the    *
 * specific language governing permissions and limitations      *
 * under the License.                                           *
 ****************************************************************/

package org.apache.hupa.client.activity;

import java.util.ArrayList;
import java.util.List;

import org.apache.hupa.client.rf.HupaRequestFactory;

import com.google.gwt.activity.shared.AbstractActivity;
import com.google.gwt.event.shared.EventBus;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.place.shared.PlaceController;
import com.google.inject.Inject;

public abstract class AppBaseActivity extends AbstractActivity {

	@Inject protected EventBus eventBus;
	@Inject protected PlaceController placeController;
	@Inject protected HupaRequestFactory requestFactory;

	protected List<HandlerRegistration> registrations = new ArrayList<HandlerRegistration>();

	@Override
	public void onStop() {
		for (HandlerRegistration registration : registrations) {
			registration.removeHandler();
		}
		registrations.clear();
	}

	protected void registerHandler(HandlerRegistration handlerRegistration) {
		registrations.add(handlerRegistration);
	}

	public String mayStop() {
		return null;
	}

	public void onCancel() {
	}
}
